\documentclass[a4paper,10pt]{article}

\usepackage{color,soul}
\sethlcolor{red}

\usepackage[english]{babel}
\pagestyle{plain}
\usepackage{epsfig}
\usepackage{latexsym}



\usepackage{geometry}
\geometry{a4paper, top=2cm,left=2cm, right=2cm, bottom=2cm}
\usepackage[utf8]{inputenc}
%fin recopier tel quel






%% \title{De la prolif´eration des couleuvres en Bas-Morvan}
%% \author{Jean Dupont}



\begin{document}
%debut code tableau

\begin{table}[h]
\begin{center}
  \begin{tabular}{|c|c|c|c|c|c|c|}
    \hline
       \multicolumn{6}{c|}{Schedulers} \\ \hline
        &$5\%$&$10\%$&$15\%$&$20\%$&$25\%$&$30\%$& \\ \hline
&K{\sc nn}WinOpti&$93.22$&$93.16$&$93.12$&$92.81$&$91.76$&$90.52$& \\ \hline
&S{\sc np}Sh  &$95.03$&$94.77$&$94.68$ &$94.03$ &$92.71$&$91.4$& \\ \hline
    &$\Delta$&$1.81$&$1.61$&$1.56$&$1.21$&$0.95$& &$0.88$&  \\ \hline
\hline
\end{tabular}\\+
\end{center}
   \vspace{-3mm}
   \caption{{\bf Comparaison of K{\sc nn}WinOpti and S{\sc
         np}Shuttle's average accuracies computed from the $20$
       chromosome mean accuracies.} $\Delta$: difference between accuracies.}
   \label{tab:accuracies}
\end{table}

% fin code tableau
\end{document}
